I Stole a Mountain for My Game

My brother has his own channel and he'll be showing the same game from the player's side: https://www.youtube.com/@aidevchallenge Episode two of building our survival game with AI. Last time we made the forest and pulled in real terrain for the Beskids, the mountains in southern Poland where I live. This time someone finally walks through it, and we build three places from the real map: a mountain trail, a forest road with a river, and a clearing. First, a quick look at how I make assets like the trees: GPT for the style and the reference images, then the strongest model (Opus 5.5 or GPT-6 Astra) writes a Python script and runs Blender in the background, no Blender MCP, and a gauntlet loop where one critic agent says pass or fail before I get the final say. Then the character: a Tripo model with Mixamo animations, put together in Godot with an animation tree, so walking and running blend instead of snapping, and turns follow a smooth curve. The trail uses our road scene as the reference, with its own rules for the bank, the forest floor and the space to walk. I fixed one rock by hand in the Godot editor and the agent did the rest the same way. The road follows the real route as a spline, with one short Blender-scripted piece repeated along it. And the river, my favorite part so far, is simulated once on a grid of tiny squares, checked by pouring water into a completely dry riverbed, and saved into one small file the game just reads. On top of that: the painted surface, little waves, colour, foam that follows the same current, and waterfalls that fall off the edge like a ball rolling off a table. Next episode: we took AI videos of animals and turned them into real game animations. Everything is Godot 4 and Blender, with AI agents working directly on the project files (GPT-6 Astra in Codex for VS Code, Claude Opus 5.5). Tripo and Mixamo are tools we used; this video is not sponsored. CHAPTERS 00:00 Welcome back 00:41 How I make assets with AI 01:39 The character: Tripo + Mixamo 02:04 Blending the animations 02:37 Smoother turns 02:51 Real mountains, real map 03:10 The trail 03:54 The road 04:24 The river 04:36 How the water is simulated 05:18 Water, foam and waterfalls 05:39 Walking in the water 05:50 The clearing 06:17 What's next CREDITS Terrain elevation data: GUGiK / Geoportal.gov.pl — Numeryczny Model Terenu. Mapped routes and land areas: © OpenStreetMap contributors — https://www.openstreetmap.org/copyright ©2026 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. #Godot #GameDev #AI #IndieGame #Blender